Do you think a woman should ever win the WWE title?
AJ wouldn't be a good choice because she's too small to lift most male opponents, but not enough of a high-flyer to make up for it with acrobatic spots. Hell, plenty of male wrestlers don't even include lifting moves in their regular move-sets (the bulk of Christian's move-set consists of non-lifting moves and dive spots), but her trying to DDT your average WWE superstar would look ridiculous. I'm not saying a woman couldn't, but she'd have to be able to actually work a match with a guy for one. Natalya would be a much better option since she's incredibly talented and has enough size and strength to look like a contender against men. However, I still wouldn't want her to get the distinction nor any woman currently on the main roster.
The WWE Championship has been treated well the past year with CM Punk defending it in so many great matches and against so many phenomenal talents. I'd prefer it remain the title of the elites rather than put on a woman just to sell it as a record-breaking event. If a woman ever wins it, it should be because she's legitimately among the best workers in the company. Anything else would be both demeaning to the title and to women as a whole.